kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6187 Comm: kworker/0:0 Not tainted 4.19.196-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events netlink_sock_destruct_work RIP: 0010:klist_iter_exit+0x21/0x80 lib/klist.c:314 Code: 66 0f 1f 84 00 00 00 00 00 41 54 55 53 48 89 fb e8 e4 3b 75 f9 48 8d 6b 08 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 <80> 3c 02 00 75 40 4c 8b 63 08 4d 85 e4 74 2e e8 bb 3b 75 f9 31 f6 RSP: 0018:ffff88802b8cfc48 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff87ed435c RDI: 0000000000000000 RBP: 0000000000000008 R08: 0000000000000000 R09: fffffbfff15cf690 R10: ffffffff8ae7b487 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff896efe20 R14: ffff8880ba02a840 R15: ffff8880ba02f000 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcf9d63808 CR3: 00000000af2a2000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nfc_device_iter_exit net/nfc/nfc.h:133 [inline] nfc_genl_dump_devices_done+0x31/0x50 net/nfc/netlink.c:658 genl_lock_done+0x82/0xc0 net/netlink/genetlink.c:495 netlink_sock_destruct+0x96/0x280 net/netlink/af_netlink.c:398 __sk_destruct+0x4b/0x8a0 net/core/sock.c:1559 sk_destruct net/core/sock.c:1599 [inline] __sk_free+0x165/0x3b0 net/core/sock.c:1610 sk_free+0x3b/0x50 net/core/sock.c:1621 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: (unnamed net_device) (uninitialized): option downdelay: invalid value (18446744073709551615) ---[ end trace e1055ab4561386a2 ]--- RIP: 0010:klist_iter_exit+0x21/0x80 lib/klist.c:314 Code: 66 0f 1f 84 00 00 00 00 00 41 54 55 53 48 89 fb e8 e4 3b 75 f9 48 8d 6b 08 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 <80> 3c 02 00 75 40 4c 8b 63 08 4d 85 e4 74 2e e8 bb 3b 75 f9 31 f6 (unnamed net_device) (uninitialized): option downdelay: allowed values 0 - 2147483647 RSP: 0018:ffff88802b8cfc48 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff87ed435c RDI: 0000000000000000 RBP: 0000000000000008 R08: 0000000000000000 R09: fffffbfff15cf690 R10: ffffffff8ae7b487 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff896efe20 R14: ffff8880ba02a840 R15: ffff8880ba02f000 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ea21000 CR3: 0000000009e6d000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400